P0171 p0174 problem
I just replaced my upper and lower intake manifold gaskets, fuel injector o-rings, replaced some vacuum lines and replaced plugs,wires, oil change, and MAF sensor all within this year. Yet those two pesky codes keep returning.
I got a live data code reader and the freeze frame data shows the code pulling at 1408 rpm with the engine at 88 degrees centigrade. My fuel trims: LTFT both at 24.2% and my short terms at bank one 21.5 and bank two 19.5
Does anyone have any idea what's going on. I'm stumped and running out of cash.